The first direct and straightforward nucleophilic fluoromethylation of organic compounds is reported. The tactic employs a "fleeting" lithium fluorocarbenoid (LiCH2F) generated from commercially available fluoroiodomethane. Precise reaction conditions were developed for the generation and synthetic exploitation of such a labile species. The versatility of the strategy is showcased in ca. 50 examples involving a plethora of electrophiles. Highly valuable chemicals such as fluoroalcohols, fluoroamines, and fluoromethylated oxygenated heterocycles could: be prepared in very good yields through a single synthetic operation. The scalability of the reaction and its application to complex molecular architectures (e.g., steroids) are documented.
669. Organic fluorine compounds. Part XX. Some reactions of 1-chloro-3-fluoropropan-2-ol and epifluorohydrin
作者:Ernst D. Bergmann、Sasson Cohen、Israel Shahak
DOI:10.1039/jr9610003448
日期:——
Synthesis of α-Fluoroketones from Vinyl Azides and Mechanism Interrogation
作者:Shu-Wei Wu、Feng Liu
DOI:10.1021/acs.orglett.6b01691
日期:2016.8.5
An efficient and mild fluorination of vinylazides for the synthesis of α-fluoroketones is described. The mechanistic studies indicated that a single-electron transfer (SET) and a subsequent fluorine atom transfer process could be involved in the reaction.